[linux-2.6-block.git] / arch / ppc64 / kernel / pmac_setup.c

/*
 *  arch/ppc/platforms/setup.c
 *
 *  PowerPC version
 *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
 *
 *  Adapted for Power Macintosh by Paul Mackerras
 *    Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au)
 *
 *  Derived from "arch/alpha/kernel/setup.c"
 *    Copyright (C) 1995 Linus Torvalds
 *
 *  Maintained by Benjamin Herrenschmidt (benh@kernel.crashing.org)
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version
 *  2 of the License, or (at your option) any later version.
 *
 */

/*
 * bootup setup stuff..
 */

#undef DEBUG

#include <linux/config.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/user.h>
#include <linux/a.out.h>
#include <linux/tty.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/major.h>
#include <linux/initrd.h>
#include <linux/vt_kern.h>
#include <linux/console.h>
#include <linux/ide.h>
#include <linux/pci.h>
#include <linux/adb.h>
#include <linux/cuda.h>
#include <linux/pmu.h>
#include <linux/irq.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/bitops.h>

#include <asm/processor.h>
#include <asm/sections.h>
#include <asm/prom.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/pci-bridge.h>
#include <asm/iommu.h>
#include <asm/machdep.h>
#include <asm/dma.h>
#include <asm/btext.h>
#include <asm/cputable.h>
#include <asm/pmac_feature.h>
#include <asm/time.h>
#include <asm/of_device.h>
#include <asm/lmb.h>
#include <asm/smu.h>
#include <asm/pmc.h>
#include <asm/mpic.h>
#include <asm/udbg.h>

#include "pmac.h"

#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif

static int current_root_goodness = -1;
#define DEFAULT_ROOT_DEVICE Root_SDA1	/* sda1 - slightly silly choice */

extern  int powersave_nap;
int sccdbg;

sys_ctrler_t sys_ctrler;
EXPORT_SYMBOL(sys_ctrler);

#ifdef CONFIG_PMAC_SMU
unsigned long smu_cmdbuf_abs;
EXPORT_SYMBOL(smu_cmdbuf_abs);
#endif

extern void udbg_init_scc(struct device_node *np);

static void pmac_show_cpuinfo(struct seq_file *m)
{
	struct device_node *np;
	char *pp;
	int plen;
	char* mbname;
	int mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
					PMAC_MB_INFO_MODEL, 0);
	unsigned int mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
						 PMAC_MB_INFO_FLAGS, 0);

	if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME,
			      (long)&mbname) != 0)
		mbname = "Unknown";
	
	/* find motherboard type */
	seq_printf(m, "machine\t\t: ");
	np = find_devices("device-tree");
	if (np != NULL) {
		pp = (char *) get_property(np, "model", NULL);
		if (pp != NULL)
			seq_printf(m, "%s\n", pp);
		else
			seq_printf(m, "PowerMac\n");
		pp = (char *) get_property(np, "compatible", &plen);
		if (pp != NULL) {
			seq_printf(m, "motherboard\t:");
			while (plen > 0) {
				int l = strlen(pp) + 1;
				seq_printf(m, " %s", pp);
				plen -= l;
				pp += l;
			}
			seq_printf(m, "\n");
		}
	} else
		seq_printf(m, "PowerMac\n");

	/* print parsed model */
	seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
	seq_printf(m, "pmac flags\t: %08x\n", mbflags);

	/* Indicate newworld */
	seq_printf(m, "pmac-generation\t: NewWorld\n");
}


static void __init pmac_setup_arch(void)
{
	/* init to some ~sane value until calibrate_delay() runs */
	loops_per_jiffy = 50000000;

	/* Probe motherboard chipset */
	pmac_feature_init();
#if 0
	/* Lock-enable the SCC channel used for debug */
	if (sccdbg) {
		np = of_find_node_by_name(NULL, "escc");
		if (np)
			pmac_call_feature(PMAC_FTR_SCC_ENABLE, np,
					  PMAC_SCC_ASYNC | PMAC_SCC_FLAG_XMON, 1);
	}
#endif
	/* We can NAP */
	powersave_nap = 1;

#ifdef CONFIG_ADB_PMU
	/* Initialize the PMU if any */
	find_via_pmu();
#endif
#ifdef CONFIG_PMAC_SMU
	/* Initialize the SMU if any */
	smu_init();
#endif

	/* Init NVRAM access */
	pmac_nvram_init();

	/* Setup SMP callback */
#ifdef CONFIG_SMP
	pmac_setup_smp();
#endif

	/* Lookup PCI hosts */
       	pmac_pci_init();

#ifdef CONFIG_DUMMY_CONSOLE
	conswitchp = &dummy_con;
#endif

	printk(KERN_INFO "Using native/NAP idle loop\n");
}

#ifdef CONFIG_SCSI
void note_scsi_host(struct device_node *node, void *host)
{
	/* Obsolete */
}
#endif


static int initializing = 1;

static int pmac_late_init(void)
{
	initializing = 0;
	return 0;
}

late_initcall(pmac_late_init);

/* can't be __init - can be called whenever a disk is first accessed */
void note_bootable_part(dev_t dev, int part, int goodness)
{
	extern dev_t boot_dev;
	char *p;

	if (!initializing)
		return;
	if ((goodness <= current_root_goodness) &&
	    ROOT_DEV != DEFAULT_ROOT_DEVICE)
		return;
	p = strstr(saved_command_line, "root=");
	if (p != NULL && (p == saved_command_line || p[-1] == ' '))
		return;

	if (!boot_dev || dev == boot_dev) {
		ROOT_DEV = dev + part;
		boot_dev = 0;
		current_root_goodness = goodness;
	}
}

static void pmac_restart(char *cmd)
{
	switch(sys_ctrler) {
#ifdef CONFIG_ADB_PMU
	case SYS_CTRLER_PMU:
		pmu_restart();
		break;
#endif

#ifdef CONFIG_PMAC_SMU
	case SYS_CTRLER_SMU:
		smu_restart();
		break;
#endif
	default:
		;
	}
}

static void pmac_power_off(void)
{
	switch(sys_ctrler) {
#ifdef CONFIG_ADB_PMU
	case SYS_CTRLER_PMU:
		pmu_shutdown();
		break;
#endif
#ifdef CONFIG_PMAC_SMU
	case SYS_CTRLER_SMU:
		smu_shutdown();
		break;
#endif
	default:
		;
	}
}

static void pmac_halt(void)
{
	pmac_power_off();
}

#ifdef CONFIG_BOOTX_TEXT
static void btext_putc(unsigned char c)
{
	btext_drawchar(c);
}

static void __init init_boot_display(void)
{
	char *name;
	struct device_node *np = NULL; 
	int rc = -ENODEV;

	printk("trying to initialize btext ...\n");

	name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
	if (name != NULL) {
		np = of_find_node_by_path(name);
		if (np != NULL) {
			if (strcmp(np->type, "display") != 0) {
				printk("boot stdout isn't a display !\n");
				of_node_put(np);
				np = NULL;
			}
		}
	}
	if (np)
		rc = btext_initialize(np);
	if (rc == 0)
		return;

	for (np = NULL; (np = of_find_node_by_type(np, "display"));) {
		if (get_property(np, "linux,opened", NULL)) {
			printk("trying %s ...\n", np->full_name);
			rc = btext_initialize(np);
			printk("result: %d\n", rc);
		}
		if (rc == 0)
			return;
	}
}
#endif /* CONFIG_BOOTX_TEXT */

/* 
 * Early initialization.
 */
static void __init pmac_init_early(void)
{
	DBG(" -> pmac_init_early\n");

	/* Initialize hash table, from now on, we can take hash faults
	 * and call ioremap
	 */
	hpte_init_native();

	/* Init SCC */
       	if (strstr(cmd_line, "sccdbg")) {
		sccdbg = 1;
       		udbg_init_scc(NULL);
       	}
#ifdef CONFIG_BOOTX_TEXT
	else {
		init_boot_display();

		udbg_putc = btext_putc;
	}
#endif /* CONFIG_BOOTX_TEXT */

	/* Setup interrupt mapping options */
	ppc64_interrupt_controller = IC_OPEN_PIC;

	iommu_init_early_u3();

	DBG(" <- pmac_init_early\n");
}

static int pmac_u3_cascade(struct pt_regs *regs, void *data)
{
	return mpic_get_one_irq((struct mpic *)data, regs);
}

static __init void pmac_init_IRQ(void)
{
        struct device_node *irqctrler  = NULL;
        struct device_node *irqctrler2 = NULL;
	struct device_node *np = NULL;
	struct mpic *mpic1, *mpic2;

	/* We first try to detect Apple's new Core99 chipset, since mac-io
	 * is quite different on those machines and contains an IBM MPIC2.
	 */
	while ((np = of_find_node_by_type(np, "open-pic")) != NULL) {
		struct device_node *parent = of_get_parent(np);
		if (parent && !strcmp(parent->name, "u3"))
			irqctrler2 = of_node_get(np);
		else
			irqctrler = of_node_get(np);
		of_node_put(parent);
	}
	if (irqctrler != NULL && irqctrler->n_addrs > 0) {
		unsigned char senses[128];

		printk(KERN_INFO "PowerMac using OpenPIC irq controller at 0x%08x\n",
		       (unsigned int)irqctrler->addrs[0].address);

		prom_get_irq_senses(senses, 0, 128);
		mpic1 = mpic_alloc(irqctrler->addrs[0].address,
				   MPIC_PRIMARY | MPIC_WANTS_RESET,
				   0, 0, 128, 256, senses, 128, " K2-MPIC  ");
		BUG_ON(mpic1 == NULL);
		mpic_init(mpic1);		

		if (irqctrler2 != NULL && irqctrler2->n_intrs > 0 &&
		    irqctrler2->n_addrs > 0) {
			printk(KERN_INFO "Slave OpenPIC at 0x%08x hooked on IRQ %d\n",
			       (u32)irqctrler2->addrs[0].address,
			       irqctrler2->intrs[0].line);

			pmac_call_feature(PMAC_FTR_ENABLE_MPIC, irqctrler2, 0, 0);
			prom_get_irq_senses(senses, 128, 128 + 128);

			/* We don't need to set MPIC_BROKEN_U3 here since we don't have
			 * hypertransport interrupts routed to it
			 */
			mpic2 = mpic_alloc(irqctrler2->addrs[0].address,
					   MPIC_BIG_ENDIAN | MPIC_WANTS_RESET,
					   0, 128, 128, 0, senses, 128, " U3-MPIC  ");
			BUG_ON(mpic2 == NULL);
			mpic_init(mpic2);
			mpic_setup_cascade(irqctrler2->intrs[0].line,
					   pmac_u3_cascade, mpic2);
		}
	}
	of_node_put(irqctrler);
	of_node_put(irqctrler2);
}

static void __init pmac_progress(char *s, unsigned short hex)
{
	if (sccdbg) {
		udbg_puts(s);
		udbg_puts("\n");
	}
#ifdef CONFIG_BOOTX_TEXT
	else if (boot_text_mapped) {
		btext_drawstring(s);
		btext_drawstring("\n");
	}
#endif /* CONFIG_BOOTX_TEXT */
}

/*
 * pmac has no legacy IO, anything calling this function has to
 * fail or bad things will happen
 */
static int pmac_check_legacy_ioport(unsigned int baseport)
{
	return -ENODEV;
}

static int __init pmac_declare_of_platform_devices(void)
{
	struct device_node *np, *npp;

	npp = of_find_node_by_name(NULL, "u3");
	if (npp) {
		for (np = NULL; (np = of_get_next_child(npp, np)) != NULL;) {
			if (strncmp(np->name, "i2c", 3) == 0) {
				of_platform_device_create(np, "u3-i2c", NULL);
				of_node_put(np);
				break;
			}
		}
		of_node_put(npp);
	}
        npp = of_find_node_by_type(NULL, "smu");
        if (npp) {
		of_platform_device_create(npp, "smu", NULL);
		of_node_put(npp);
	}

	return 0;
}

device_initcall(pmac_declare_of_platform_devices);

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */
static int __init pmac_probe(int platform)
{
	if (platform != PLATFORM_POWERMAC)
		return 0;
	/*
	 * On U3, the DART (iommu) must be allocated now since it
	 * has an impact on htab_initialize (due to the large page it
	 * occupies having to be broken up so the DART itself is not
	 * part of the cacheable linar mapping
	 */
	alloc_u3_dart_table();

#ifdef CONFIG_PMAC_SMU
	/*
	 * SMU based G5s need some memory below 2Gb, at least the current
	 * driver needs that. We have to allocate it now. We allocate 4k
	 * (1 small page) for now.
	 */
	smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
#endif /* CONFIG_PMAC_SMU */

	return 1;
}

static int pmac_probe_mode(struct pci_bus *bus)
{
	struct device_node *node = bus->sysdata;

	/* We need to use normal PCI probing for the AGP bus,
	   since the device for the AGP bridge isn't in the tree. */
	if (bus->self == NULL && device_is_compatible(node, "u3-agp"))
		return PCI_PROBE_NORMAL;

	return PCI_PROBE_DEVTREE;
}

struct machdep_calls __initdata pmac_md = {
#ifdef CONFIG_HOTPLUG_CPU
	.cpu_die		= generic_mach_cpu_die,
#endif
	.probe			= pmac_probe,
	.setup_arch		= pmac_setup_arch,
	.init_early		= pmac_init_early,
       	.get_cpuinfo		= pmac_show_cpuinfo,
	.init_IRQ		= pmac_init_IRQ,
	.get_irq		= mpic_get_irq,
	.pcibios_fixup		= pmac_pcibios_fixup,
	.pci_probe_mode		= pmac_probe_mode,
	.restart		= pmac_restart,
	.power_off		= pmac_power_off,
	.halt			= pmac_halt,
       	.get_boot_time		= pmac_get_boot_time,
       	.set_rtc_time		= pmac_set_rtc_time,
       	.get_rtc_time		= pmac_get_rtc_time,
      	.calibrate_decr		= pmac_calibrate_decr,
	.feature_call		= pmac_do_feature_call,
	.progress		= pmac_progress,
	.check_legacy_ioport	= pmac_check_legacy_ioport,
	.idle_loop		= native_idle,
	.enable_pmcs		= power4_enable_pmcs,
};
Commit	Line	Data
1da177e4 LT	1	/*
	2	* arch/ppc/platforms/setup.c
	3	*
	4	* PowerPC version
	5	* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
	6	*
	7	* Adapted for Power Macintosh by Paul Mackerras
	8	* Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au)
	9	*
	10	* Derived from "arch/alpha/kernel/setup.c"
	11	* Copyright (C) 1995 Linus Torvalds
	12	*
	13	* Maintained by Benjamin Herrenschmidt (benh@kernel.crashing.org)
	14	*
	15	* This program is free software; you can redistribute it and/or
	16	* modify it under the terms of the GNU General Public License
	17	* as published by the Free Software Foundation; either version
	18	* 2 of the License, or (at your option) any later version.
	19	*
	20	*/
	21
	22	/*
	23	* bootup setup stuff..
	24	*/
	25
	26	#undef DEBUG
	27
	28	#include <linux/config.h>
	29	#include <linux/init.h>
	30	#include <linux/errno.h>
	31	#include <linux/sched.h>
	32	#include <linux/kernel.h>
	33	#include <linux/mm.h>
	34	#include <linux/stddef.h>
	35	#include <linux/unistd.h>
	36	#include <linux/ptrace.h>
	37	#include <linux/slab.h>
	38	#include <linux/user.h>
	39	#include <linux/a.out.h>
	40	#include <linux/tty.h>
	41	#include <linux/string.h>
	42	#include <linux/delay.h>
	43	#include <linux/ioport.h>
	44	#include <linux/major.h>
	45	#include <linux/initrd.h>
	46	#include <linux/vt_kern.h>
	47	#include <linux/console.h>
	48	#include <linux/ide.h>
	49	#include <linux/pci.h>
	50	#include <linux/adb.h>
	51	#include <linux/cuda.h>
	52	#include <linux/pmu.h>
	53	#include <linux/irq.h>
	54	#include <linux/seq_file.h>
	55	#include <linux/root_dev.h>
	56	#include <linux/bitops.h>
	57
	58	#include <asm/processor.h>
	59	#include <asm/sections.h>
	60	#include <asm/prom.h>
	61	#include <asm/system.h>
	62	#include <asm/io.h>
	63	#include <asm/pci-bridge.h>
	64	#include <asm/iommu.h>
65	#include <asm/machdep.h>
66	#include <asm/dma.h>
67	#include <asm/btext.h>
68	#include <asm/cputable.h>
69	#include <asm/pmac_feature.h>
70	#include <asm/time.h>
71	#include <asm/of_device.h>
72	#include <asm/lmb.h>
73	#include <asm/smu.h>
180a3362	74	#include <asm/pmc.h>
bbeb3f4c	75	#include <asm/mpic.h>
40ef8cbc	76	#include <asm/udbg.h>
1da177e4 LT	77
1da177e4 LT	78	#include "pmac.h"
1da177e4 LT	79
	80	#ifdef DEBUG
	81	#define DBG(fmt...) udbg_printf(fmt)
	82	#else
	83	#define DBG(fmt...)
	84	#endif
	85
	86	static int current_root_goodness = -1;
	87	#define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */
	88
	89	extern int powersave_nap;
	90	int sccdbg;
	91
	92	sys_ctrler_t sys_ctrler;
	93	EXPORT_SYMBOL(sys_ctrler);
	94
	95	#ifdef CONFIG_PMAC_SMU
	96	unsigned long smu_cmdbuf_abs;
	97	EXPORT_SYMBOL(smu_cmdbuf_abs);
	98	#endif
	99
	100	extern void udbg_init_scc(struct device_node *np);
	101
aacaf9bd	102	static void pmac_show_cpuinfo(struct seq_file *m)
1da177e4 LT	103	{
	104	struct device_node *np;
	105	char *pp;
	106	int plen;
	107	char* mbname;
	108	int mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
	109	PMAC_MB_INFO_MODEL, 0);
	110	unsigned int mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
	111	PMAC_MB_INFO_FLAGS, 0);
	112
	113	if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME,
	114	(long)&mbname) != 0)
	115	mbname = "Unknown";
	116
	117	/* find motherboard type */
	118	seq_printf(m, "machine\t\t: ");
	119	np = find_devices("device-tree");
	120	if (np != NULL) {
	121	pp = (char *) get_property(np, "model", NULL);
	122	if (pp != NULL)
	123	seq_printf(m, "%s\n", pp);
	124	else
	125	seq_printf(m, "PowerMac\n");
	126	pp = (char *) get_property(np, "compatible", &plen);
	127	if (pp != NULL) {
	128	seq_printf(m, "motherboard\t:");
	129	while (plen > 0) {
	130	int l = strlen(pp) + 1;
	131	seq_printf(m, " %s", pp);
	132	plen -= l;
	133	pp += l;
	134	}
	135	seq_printf(m, "\n");
	136	}
	137	} else
	138	seq_printf(m, "PowerMac\n");
	139
	140	/* print parsed model */
	141	seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
	142	seq_printf(m, "pmac flags\t: %08x\n", mbflags);
	143
	144	/* Indicate newworld */
	145	seq_printf(m, "pmac-generation\t: NewWorld\n");
	146	}
	147
	148
6fdfb382	149	static void __init pmac_setup_arch(void)
1da177e4 LT	150	{
	151	/* init to some ~sane value until calibrate_delay() runs */
	152	loops_per_jiffy = 50000000;
	153
	154	/* Probe motherboard chipset */
	155	pmac_feature_init();
	156	#if 0
	157	/* Lock-enable the SCC channel used for debug */
	158	if (sccdbg) {
	159	np = of_find_node_by_name(NULL, "escc");
	160	if (np)
	161	pmac_call_feature(PMAC_FTR_SCC_ENABLE, np,
	162	PMAC_SCC_ASYNC \| PMAC_SCC_FLAG_XMON, 1);
	163	}
	164	#endif
	165	/* We can NAP */
	166	powersave_nap = 1;
	167
	168	#ifdef CONFIG_ADB_PMU
	169	/* Initialize the PMU if any */
	170	find_via_pmu();
	171	#endif
	172	#ifdef CONFIG_PMAC_SMU
	173	/* Initialize the SMU if any */
	174	smu_init();
	175	#endif
	176
	177	/* Init NVRAM access */
	178	pmac_nvram_init();
	179
	180	/* Setup SMP callback */
	181	#ifdef CONFIG_SMP
	182	pmac_setup_smp();
	183	#endif
	184
	185	/* Lookup PCI hosts */
	186	pmac_pci_init();
	187
	188	#ifdef CONFIG_DUMMY_CONSOLE
	189	conswitchp = &dummy_con;
	190	#endif
62d60e9f ME	191
62d60e9f ME	192	printk(KERN_INFO "Using native/NAP idle loop\n");
1da177e4 LT	193	}
	194
	195	#ifdef CONFIG_SCSI
	196	void note_scsi_host(struct device_node node, void host)
	197	{
	198	/* Obsolete */
	199	}
	200	#endif
	201
	202
	203	static int initializing = 1;
	204
	205	static int pmac_late_init(void)
	206	{
	207	initializing = 0;
	208	return 0;
	209	}
	210
	211	late_initcall(pmac_late_init);
	212
	213	/* can't be __init - can be called whenever a disk is first accessed */
aacaf9bd	214	void note_bootable_part(dev_t dev, int part, int goodness)
1da177e4 LT	215	{
	216	extern dev_t boot_dev;
	217	char *p;
	218
	219	if (!initializing)
	220	return;
	221	if ((goodness <= current_root_goodness) &&
	222	ROOT_DEV != DEFAULT_ROOT_DEVICE)
	223	return;
	224	p = strstr(saved_command_line, "root=");
	225	if (p != NULL && (p == saved_command_line \|\| p[-1] == ' '))
	226	return;
	227
	228	if (!boot_dev \|\| dev == boot_dev) {
	229	ROOT_DEV = dev + part;
	230	boot_dev = 0;
	231	current_root_goodness = goodness;
	232	}
	233	}
	234
aacaf9bd	235	static void pmac_restart(char *cmd)
1da177e4 LT	236	{
	237	switch(sys_ctrler) {
	238	#ifdef CONFIG_ADB_PMU
	239	case SYS_CTRLER_PMU:
	240	pmu_restart();
	241	break;
	242	#endif
	243
	244	#ifdef CONFIG_PMAC_SMU
	245	case SYS_CTRLER_SMU:
	246	smu_restart();
	247	break;
	248	#endif
	249	default:
	250	;
	251	}
	252	}
	253
aacaf9bd	254	static void pmac_power_off(void)
1da177e4 LT	255	{
	256	switch(sys_ctrler) {
	257	#ifdef CONFIG_ADB_PMU
	258	case SYS_CTRLER_PMU:
	259	pmu_shutdown();
	260	break;
	261	#endif
	262	#ifdef CONFIG_PMAC_SMU
	263	case SYS_CTRLER_SMU:
	264	smu_shutdown();
	265	break;
	266	#endif
	267	default:
	268	;
	269	}
	270	}
	271
aacaf9bd	272	static void pmac_halt(void)
1da177e4 LT	273	{
	274	pmac_power_off();
	275	}
	276
	277	#ifdef CONFIG_BOOTX_TEXT
1da177e4 LT	278	static void btext_putc(unsigned char c)
	279	{
	280	btext_drawchar(c);
	281	}
	282
	283	static void __init init_boot_display(void)
	284	{
	285	char *name;
	286	struct device_node *np = NULL;
	287	int rc = -ENODEV;
	288
	289	printk("trying to initialize btext ...\n");
	290
	291	name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
	292	if (name != NULL) {
	293	np = of_find_node_by_path(name);
	294	if (np != NULL) {
	295	if (strcmp(np->type, "display") != 0) {
	296	printk("boot stdout isn't a display !\n");
	297	of_node_put(np);
	298	np = NULL;
	299	}
	300	}
	301	}
	302	if (np)
	303	rc = btext_initialize(np);
	304	if (rc == 0)
	305	return;
	306
	307	for (np = NULL; (np = of_find_node_by_type(np, "display"));) {
	308	if (get_property(np, "linux,opened", NULL)) {
	309	printk("trying %s ...\n", np->full_name);
	310	rc = btext_initialize(np);
	311	printk("result: %d\n", rc);
	312	}
	313	if (rc == 0)
	314	return;
	315	}
	316	}
	317	#endif /* CONFIG_BOOTX_TEXT */
	318
	319	/*
	320	* Early initialization.
	321	*/
6fdfb382	322	static void __init pmac_init_early(void)
1da177e4 LT	323	{
	324	DBG(" -> pmac_init_early\n");
	325
	326	/* Initialize hash table, from now on, we can take hash faults
	327	* and call ioremap
	328	*/
	329	hpte_init_native();
	330
	331	/* Init SCC */
	332	if (strstr(cmd_line, "sccdbg")) {
	333	sccdbg = 1;
	334	udbg_init_scc(NULL);
	335	}
1da177e4	336	#ifdef CONFIG_BOOTX_TEXT
c8f1c8be	337	else {
1da177e4 LT	338	init_boot_display();
1da177e4 LT	339
c8f1c8be	340	udbg_putc = btext_putc;
1da177e4	341	}
c8f1c8be	342	#endif /* CONFIG_BOOTX_TEXT */
1da177e4 LT	343
	344	/* Setup interrupt mapping options */
	345	ppc64_interrupt_controller = IC_OPEN_PIC;
	346
	347	iommu_init_early_u3();
	348
	349	DBG(" <- pmac_init_early\n");
	350	}
	351
	352	static int pmac_u3_cascade(struct pt_regs regs, void data)
	353	{
	354	return mpic_get_one_irq((struct mpic *)data, regs);
	355	}
	356
	357	static __init void pmac_init_IRQ(void)
	358	{
	359	struct device_node *irqctrler = NULL;
	360	struct device_node *irqctrler2 = NULL;
	361	struct device_node *np = NULL;
	362	struct mpic mpic1, mpic2;
	363
	364	/* We first try to detect Apple's new Core99 chipset, since mac-io
	365	* is quite different on those machines and contains an IBM MPIC2.
	366	*/
	367	while ((np = of_find_node_by_type(np, "open-pic")) != NULL) {
	368	struct device_node *parent = of_get_parent(np);
	369	if (parent && !strcmp(parent->name, "u3"))
	370	irqctrler2 = of_node_get(np);
	371	else
	372	irqctrler = of_node_get(np);
	373	of_node_put(parent);
	374	}
	375	if (irqctrler != NULL && irqctrler->n_addrs > 0) {
	376	unsigned char senses[128];
	377
	378	printk(KERN_INFO "PowerMac using OpenPIC irq controller at 0x%08x\n",
	379	(unsigned int)irqctrler->addrs[0].address);
	380
	381	prom_get_irq_senses(senses, 0, 128);
	382	mpic1 = mpic_alloc(irqctrler->addrs[0].address,
	383	MPIC_PRIMARY \| MPIC_WANTS_RESET,
	384	0, 0, 128, 256, senses, 128, " K2-MPIC ");
	385	BUG_ON(mpic1 == NULL);
	386	mpic_init(mpic1);
	387
	388	if (irqctrler2 != NULL && irqctrler2->n_intrs > 0 &&
	389	irqctrler2->n_addrs > 0) {
	390	printk(KERN_INFO "Slave OpenPIC at 0x%08x hooked on IRQ %d\n",
	391	(u32)irqctrler2->addrs[0].address,
	392	irqctrler2->intrs[0].line);
	393
	394	pmac_call_feature(PMAC_FTR_ENABLE_MPIC, irqctrler2, 0, 0);
	395	prom_get_irq_senses(senses, 128, 128 + 128);
	396
	397	/* We don't need to set MPIC_BROKEN_U3 here since we don't have
	398	* hypertransport interrupts routed to it
	399	*/
	400	mpic2 = mpic_alloc(irqctrler2->addrs[0].address,
	401	MPIC_BIG_ENDIAN \| MPIC_WANTS_RESET,
	402	0, 128, 128, 0, senses, 128, " U3-MPIC ");
	403	BUG_ON(mpic2 == NULL);
	404	mpic_init(mpic2);
	405	mpic_setup_cascade(irqctrler2->intrs[0].line,
	406	pmac_u3_cascade, mpic2);
407	}
408	}
409	of_node_put(irqctrler);
410	of_node_put(irqctrler2);
411	}
412
413	static void __init pmac_progress(char *s, unsigned short hex)
414	{
415	if (sccdbg) {
416	udbg_puts(s);
417	udbg_puts("\n");
418	}
419	#ifdef CONFIG_BOOTX_TEXT
420	else if (boot_text_mapped) {
421	btext_drawstring(s);
422	btext_drawstring("\n");
423	}
424	#endif /* CONFIG_BOOTX_TEXT */
425	}
426
427	/*
428	* pmac has no legacy IO, anything calling this function has to
429	* fail or bad things will happen
430	*/
431	static int pmac_check_legacy_ioport(unsigned int baseport)
432	{
433	return -ENODEV;
434	}
435
436	static int __init pmac_declare_of_platform_devices(void)
437	{
0365ba7f	438	struct device_node np, npp;
1da177e4	439
0365ba7f BH	440	npp = of_find_node_by_name(NULL, "u3");
	441	if (npp) {
	442	for (np = NULL; (np = of_get_next_child(npp, np)) != NULL;) {
1da177e4	443	if (strncmp(np->name, "i2c", 3) == 0) {
0365ba7f BH	444	of_platform_device_create(np, "u3-i2c", NULL);
0365ba7f BH	445	of_node_put(np);
1da177e4 LT	446	break;
1da177e4 LT	447	}
0365ba7f BH	448	}
	449	of_node_put(npp);
	450	}
	451	npp = of_find_node_by_type(NULL, "smu");
	452	if (npp) {
	453	of_platform_device_create(npp, "smu", NULL);
	454	of_node_put(npp);
1da177e4 LT	455	}
	456
	457	return 0;
	458	}
	459
	460	device_initcall(pmac_declare_of_platform_devices);
	461
	462	/*
	463	* Called very early, MMU is off, device-tree isn't unflattened
	464	*/
	465	static int __init pmac_probe(int platform)
	466	{
	467	if (platform != PLATFORM_POWERMAC)
	468	return 0;
	469	/*
	470	* On U3, the DART (iommu) must be allocated now since it
	471	* has an impact on htab_initialize (due to the large page it
	472	* occupies having to be broken up so the DART itself is not
	473	* part of the cacheable linar mapping
	474	*/
	475	alloc_u3_dart_table();
	476
	477	#ifdef CONFIG_PMAC_SMU
	478	/*
	479	* SMU based G5s need some memory below 2Gb, at least the current
	480	* driver needs that. We have to allocate it now. We allocate 4k
	481	* (1 small page) for now.
	482	*/
	483	smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
	484	#endif /* CONFIG_PMAC_SMU */
	485
	486	return 1;
	487	}
	488
4267292b PM	489	static int pmac_probe_mode(struct pci_bus *bus)
	490	{
	491	struct device_node *node = bus->sysdata;
	492
	493	/* We need to use normal PCI probing for the AGP bus,
	494	since the device for the AGP bridge isn't in the tree. */
	495	if (bus->self == NULL && device_is_compatible(node, "u3-agp"))
	496	return PCI_PROBE_NORMAL;
	497
	498	return PCI_PROBE_DEVTREE;
	499	}
	500
1da177e4 LT	501	struct machdep_calls __initdata pmac_md = {
	502	#ifdef CONFIG_HOTPLUG_CPU
	503	.cpu_die = generic_mach_cpu_die,
	504	#endif
	505	.probe = pmac_probe,
	506	.setup_arch = pmac_setup_arch,
	507	.init_early = pmac_init_early,
	508	.get_cpuinfo = pmac_show_cpuinfo,
	509	.init_IRQ = pmac_init_IRQ,
	510	.get_irq = mpic_get_irq,
	511	.pcibios_fixup = pmac_pcibios_fixup,
4267292b	512	.pci_probe_mode = pmac_probe_mode,
1da177e4 LT	513	.restart = pmac_restart,
	514	.power_off = pmac_power_off,
	515	.halt = pmac_halt,
	516	.get_boot_time = pmac_get_boot_time,
	517	.set_rtc_time = pmac_set_rtc_time,
	518	.get_rtc_time = pmac_get_rtc_time,
	519	.calibrate_decr = pmac_calibrate_decr,
	520	.feature_call = pmac_do_feature_call,
	521	.progress = pmac_progress,
62d60e9f ME	522	.check_legacy_ioport = pmac_check_legacy_ioport,
62d60e9f ME	523	.idle_loop = native_idle,
180a3362	524	.enable_pmcs = power4_enable_pmcs,
1da177e4	525	};